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Stells [14]
2 years ago
14

The ages of some lectures are 42,54,50,54,50,42,46,46,48 and 48.Calculate the:

Mathematics
1 answer:
gregori [183]2 years ago
7 0

Answer:

The mean age is 48

The standard deviation is 4

Step-by-step explanation:

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2 years ago
White and black shapes are used in a game Some of the shapes are circles All the other shapes are squares The ratio of white to
PIT_PIT [208]

Answer:

The fraction of all shapes which are square in shape is \frac{23}{32}.

Step-by-step explanation:

Given that , in a game , white and black shapes are used. Some of them are circle in shape and remains are square in shape.

The ratio of white to black shapes are 5:11.

Consider 5x= the number of shapes which are white in color.

11x= The number of shapes which are black in color.

There are (5x+11x)= 16x shapes in the game.

The  white circle and white square are in the ratio 3:7.

The number of white square is

=(\textrm{The number of white shape})\times (\frac{7}{3+7})

=(5x)\times (\frac{7}{10})

=\frac{7x}{2}

The black circles and black square are in the ratio 3:8

The number of black square is

=(\textrm{The number of black shape})\times (\frac{8}{3+8})

=(11x)\times (\frac{8}{11})

=8x

Therefore the total number of shape which are square is

=\frac{7x}{2}+8x

=\frac{7x+16x}{2}

=\frac{23x}{2}

The fraction of all shape are square is

=\frac{\textrm{shape in square}}{\textrm{Total number shape}}

=\frac{\frac{23x}{2}}{16x}

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5 0
3 years ago
A box of 15 cookies cost 8 dollars how much dies it cosy to buy 1 cookie
3241004551 [841]
15÷8=1.875
I would round up to $1.88 /cookie.
4 0
3 years ago
Megan is sitting in her car in a parking lot. The car next to her pulls forward.If Megan is looking only at the car next to her
slega [8]
I think it is moving backward because when a car is parking and you are leaving, then you would be moving backward.

Hope this helped☺☺
8 0
2 years ago
Read 2 more answers
What is the least common multiple of 2, 6, and 12?
Debora [2.8K]

Answer:

The LCM of 2,6,12 2 , 6 , 12 is 2⋅2⋅3=12 2 ⋅ 2 ⋅ 3 = 12 .

Step-by-step explanation:

4 0
2 years ago
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